MANUFACTURING METHOD OF OPTICAL FILM, MEASUREMENT METHOD OF OPTICAL FILM, TAKE-UP BODY OF OPTICAL FILM, AND LAMINATE OF OPTICAL FILM

• Main Authors: TADA MASANORI, ARINO KAORU, SUDO TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 18.08.2016
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TRANSPORTING

PROBLEM TO BE SOLVED: To reduce a reduction in dimensional accuracy due to absorption of moisture by a substrate, regarding an optical film, such as a pattern phase difference film used for an image display device that displays three-dimensional images in a passive method.SOLUTION: A manufacturing method of an optical film comprises: an alignment layer manufacturing step of manufacturing an alignment layer 3 on a substrate 2 formed of a long transparent film material; and a phase difference layer manufacturing step of manufacturing a phase difference layer 4 on the alignment layer 3 to manufacture an optical film raw fabric 7, and a moisture-proof film 12 and the optical film raw fabric 7 are laminated and taken up in a roll to manufacture a take-up body 15 of the optical film raw fabric 7.SELECTED DRAWING: Figure 3 【課題】パッシブ方式により３次元画像を表示する画像表示装置に使用するパターン位相差フィルム等の光学フィルムに関して、基材の吸湿による寸法精度の低下を低減する。【解決手段】長尺透明フィルム材による基材２に配向層３を作製する配向層作製工程と、前記配向層３の上に位相差層４を作製して光学フィルム原反７を作製する位相差層作製工程と、防湿フィルム１２と前記光学フィルム原反７とを積層してロールに巻き取って前記光学フィルム原反７の巻取体１５を作製する。【選択図】図３